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July 24, 2025

Trigger Remote Custom Evaluations from the LangfuseUI

Marlies Mayerhofer

Enable non-technical users to trigger external experiment pipelines directly from the Langfuse UI on datasets.

You can now trigger external evaluation pipelines directly from the Langfuse UI. This feature enables non-technical users to execute Dataset Runs without requiring code changes or manual setup.

Configure a remote experiment URL at the dataset level, and team members can trigger evaluations with a single click. Langfuse will send the dataset name, ID, and any custom payload to your evaluation service, then wait up to 10 seconds for a response.

Features

• Dataset-level configuration: Set up experiment URLs and custom payloads per dataset
• Simple triggering: One-click experiment execution from the UI
• Custom payloads: Send additional context or parameters to your experiment service
• Response handling: 10-second timeout with status feedback

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